Henry Kissinger at home in Connecticut: “he came to be almost more identified with US foreign policy than the presidents he served under” © Stefan Ruiz

“I’m very concerned about how the Ukrainian situation is evolving because I think it has some of the attributes of the July 1914 situation,” says Henry Kissinger, staring out through the drizzle at the landscaped grounds of his Connecticut farmhouse home. “Everybody’s country is doing things that are perfectly reasonable within their framework, and [they] don’t find the strength or the vision to do what should be done.”

He adds: “I have urged since the beginning of the crisis a diplomatic effort based on the recognition that what is at stake is the future of international order.”

That is the theme of Kissinger’s latest book, called simply World Order. We have met to discuss it at his house high in the Connecticut hills, a place he describes as two and a half hours from New York City (where he goes a couple of times a week for work), but is easily four. A mile up an unpaved road, a large sign reads “Please Stop;” a security guard emerges from a house in a clearing to deliver the same message. The drive finally opens out onto a vision of parkland, a small lake on each side of a low, white clapboard farmhouse, surrounded by neatly converted farm buildings.

Kissinger, now 91, had heart surgery just three weeks earlier, although he seems unaffected by it. Smiling and burly, he has a quality priceless in world affairs that photographers recognise well; no matter where pictured, even in cable-knit sweater and slacks on his lawn, he always looks exactly like Henry Kissinger. The house is humming with preparations for his book launch and with extended family life; he has two children and five grandchildren, some of whom are about to visit (and Samantha Power, the United States Ambassador to the United Nations, is due for lunch the next day, his staff say); their black labrador, Abigail, is running around.

For all the informal tone, and a wit and charm that is much commented on (and of which he is clearly aware), he…

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